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Table of n, a(n) for n=1..52.
Cf. A071786, A151767.
Sequence in context: A243020 A061921 A071786 * A004852 A078546 A004863
Adjacent sequences: A151763 A151764 A151765 * A151767 A151768 A151769
N. J. A. Sloane, Jun 22 2009